[Cheat Sheet] Pairplot - 여러 변수간 산점도

import os

import pandas as pd
import numpy as np

import matplotlib as mpl
import matplotlib.pyplot as plt
import seaborn as sns

np.random.seed(seed=2020)
x1 = np.random.normal(size=100) + 20
e = np.random.normal(size=100)
x2 = 2*x1 + 10 + e

x3 = np.random.normal(size=100) * 2
x4 = 0.5*x3 + 0.5*x2 + 5*e

z = np.random.binomial(n=1, p=0.4, size=100).astype(str)

data = pd.DataFrame({'x1':x1,
                     'x2':x2,
                     'x3':x3,
                     'x4':x4,
                     'z':z})
data.head()

g = sns.PairGrid(data, vars=['x1','x2','x3','x4'], hue='z', palette='RdBu_r')
g.map(plt.scatter, alpha=0.8)
g.add_legend()